Removed no longer used FlowRunReadSerializer.NODE_TYPES
Removed no longer used FlowRunReadSerializer.NODE_TYPES

pulilab/rapidpro,tsotetsi/textily-web,tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,tsotetsi/textily-web,tsotetsi/textily-web,pulilab/rapidpro,pulilab/rapidpro,pulilab/rapidpro